Clamp



Mafch 10, 1931. w TRAUTNER 1,795,525

CLAMP Filed April 30, 1930 W fiaaZrzen 61301," was.

Patented Mar. 10, 1931 UNITED STATES WILLIAM L. TRAUTNER, OF MILWAUKEE, WISCONSIN CLAMP Application filed April 30,

This invention relates to a clamp for use in holding together sections of wooden panels, articles of furniture, etc., while an adhesive placed therebetween is hardening.

5 Heretofore it has generally been necessary to fasten blocks of wood or the like to the parts of panels and similar structures in order to permit attachment of clamps.

It is an object of the present invention to 1 provide a clamp which can be applied readily to the parts to be joined, can be easily tightened to draw the parts together tightly, and also acts as a backing for the parts to hold them in proper alinement while under compression.

It is a further object to provide a clamp which is simple and compact in construction, formed of few parts, and will not readily get out of order.

With the foregoing and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention disclosed herein may be made within the'scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawing the preferred form of the invention has been shown.

In said drawing- Figure 1 is aplan view showing the clamp applied to the work.

Figure 2 is a section on line 22, Figure 1.

Figure 3 is a section on line 3-3, Figure 2, one end portion of the bolt being shown in plan and the other end portion being removed.

Figure 4 is a section through the clamp taken on line H, Figure 2.

Referring to the figures by characters of reference, 1 designates the body of a jaw from one end of which is extended a head 2 disposed at right angles to the body and provided with a rounded ear 3 underlying the body. An opening 4 is formed in the head 2 for the reception of one end of a tie bolt 5. Both ends of this bolt are screw threaded for engagement by nuts 6 adapted to bear against 1930. Serial No. 448,630.

the heads 2 so as to hold them against movement from each other. Each of the body portions 1 has a longitudinal groove 7 providing a seat for the bolt 5 so that the opposed jaws can be easily alined.

In practice the parts A of the work to be joined are formed with recesses B produced by boring, each of these recesses being of such diameter that the head 2 of one of the jaws can be inserted thereinto and the ear 3 fitted snugly against the wall of the recess. After the parts A have been assembled the heads 2 are placed in the recesses so that the body portions 1 will extend toward each other. Bolt 5 is then inserted into the open 651 ings 4 and by tightening the nuts 6 the heads 2 will be forced toward each other, thrusting through their ears 3 against the walls of the recesses 13.

During the tightening of the clamp the body portions 1 of the jaws which extend toward each other will be held in proper alinement because they rest on the bolt 5. Consequently there is no danger of the heads 2 tilting and binding on the bolt or mutilat- 75. ing the threads.

By making the recesses 3 of proper depth the bolt 5 will rest on the work and hold its surfaces flush.

What is claimed is:

1. A work clamp including opposed jaws each including a head for insertion into a circular bore, a rounded ear extending from each head, said ears being extended toward each other for engagement with the arcuate walls of the recesses,'and bodies extending from the heads toward each other, a bolt loosely extended through the heads and adapted to rest upon the object being clamped, and means engaging the bolt for drawing the heads toward each other.

2. The combination with structures having bores extending thereinto, of heads seated in the bores, rounded ears projecting toward each other from the heads for engaging throughout their widths the adjacent walls of the recesses, a bolt extending loosely through the heads, means engaging the bolt for drawing the heads toward each other, and bodies extending toward each other from the heads and engaging the bolt throughout their length, thereby to grip the bolt transversely between the bodies and the recessed object structures.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature.

WILLIAM L. TRAUTNER. 

